新しい電力伝送技術により、ワイヤレス充電にかつてない自由度をもたらす(New power transfer technology provides unprecedented freedom for wireless charging)

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デバイスの位置や向きに関係なく、また外出先でも充電が可能です。 Devices can be charged regardless of their position or orientation and even on the go.

2022-02-01 フィンランド・アールト大学

デバイスの位置や向きに関係なく、また外出先でも充電が可能です。
新しい電力伝達技術により、ワイヤーやプラグを使用せずにデバイスを便利に充電できます。倉庫のロボット、キッチン家電、さらには電話やラップトップでさえ、充電エリアのどこからでも電力を受け取ることができます。また、デバイスが動いている間も電力転送が継続するため、このテクノロジーは、いつか外出先で電気自動車に電力を供給することができます。

 

Aalto_testrobot.jpg

Wireless charging of a retail robot at a test site. Photo: Prasad Jayathurathnage / Aalto University


<関連情報>

New power transfer technology provides unprecedented freedom for wireless charging | Aalto University
Devices can be charged regardless of their position or orientation and even on the go.
Large-Area Free-Positioning Wireless Power Transfer to Movable Receivers
This article introduces a method for efficient and robust free-positioning wireless power transfer (WPT) in a large area...

 

Large-Area Free-Positioning Wireless Power Transfer to Movable Receivers

Shamsul Al Mahmud; Ishtiaque Ahmed Panhwar; Prasad Kumara Sampath Jayathurathnage

Abstract:

This paper introduces a method for efficient and robust free-positioning wireless power transfer (WPT) in a large area, which can be applied to many use cases including wireless charging of industrial robots, drones, or electric scooters. Multiple transmitters (Txs) are placed in a pad-like area, and the transmitter coils are optimally excited to enable robust and efficient power transfer to movable receivers within the charging area. The proposed configuration enables almost continuous magnetic flux path from a set of Tx coil(s) to another set of Tx coil(s) through the receiver coil ferrite core. Therefore, efficient power transfer is ensured throughout the whole Tx coverage area. The paper introduces a novel method to detect the position and orientation of the receiver only from the Tx-side measurements. The proposed solution is experimentally verified in a laboratory prototype, and the experimental results show DC-to-DC efficiency of 91% with only 1% variation in most of the Rx positions.
Published in: IEEE Transactions on Industrial Electronics ( Early Access )
Page(s): 1 – 1
Date of Publication: 25 January 2022 
ISSN Information:
Publisher: IEEE
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